Language/Volapuk/Grammar/Reflexive-pronouns

Reflexive pronouns (himself, herself, itself, oneself, yourself, yourselves, themselves) are expressed by ok/oks which is modified according to its function in the sentence; the idea of each other is expressed by od/ods, which again is modified according to its function:

• Älöfofs okis ‘they used to love themselves’
• Älöfofs odis ‘they used to love each other’
• Ojelodom oki ‘he will defend himself’
• Ojelodoms odis ‘they will defend each other’
• Ekötof oki ‘she's cut herself’
• Ekötof ofi ‘she's cut her (that is, someone else)’
• Iplidols odis ‘you had liked each other’
• Iplidols okis ‘you had liked yourselves’

Source: http://www.xn--volapk-7ya.com/quick-look-at-volapuk.html